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Publication numberUS5249376 A
Publication typeGrant
Application numberUS 07/977,001
Publication dateOct 5, 1993
Filing dateNov 16, 1992
Priority dateNov 16, 1992
Fee statusLapsed
Publication number07977001, 977001, US 5249376 A, US 5249376A, US-A-5249376, US5249376 A, US5249376A
InventorsMichael Capria
Original AssigneeMichael Capria
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Shoe heel with rollers
US 5249376 A
Abstract
A shoe heel having rollers (20) arranged on multiple axles (18) each aligned with its longitudinal axis pointed toward the center of the shoe (16) sole. The rollers are mounted in a durable housing (14) open along its bottom with the rollers projecting out from the housing. The axles are secured along the bottom of a higher rear plate (10) and a shorter front plate (12) to maintain even contact of the rollers against a walking surface.
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Claims(2)
I claim:
1. A shoe heel device in combination with a shoe comprising:
a housing fastened to an undersurface rearward heel portion of the shoe;
a plurality of rollers on axles secured inside said housing wherein a longitudinal axis of said axles substantially aligns to converge on a mutual reference point located about a forward undersurface of the shoe
wherein said rollers are substantially wheel shaped structures and said axles are mounted substantially adjacent to each other such that a distance between the axles approximates closer toward a forefoot region of the shoe than in a rearfoot region of the shoe.
2. The shoe heel device as claimed by claim 1 wherein the alignment and plurality of said rollers provides a means for assisting specific pivotal movement of the attached shoe in a circular arc which radius substantially measures the length of the attached shoe.
Description
FIELD OF THE INVENTION

This invention relates to orthopedic footwear in general and more specifically to rollers in a shoe heel.

BACKGROUND OF THE INVENTION

Lower extremity sprain injuries and related microtrauma often result from poorly managed torsion strain in the affected ankle or knee joints. Overweight individuals often suffer knee injuries from repeated torsion strain when walking as they turn to change directions. This occurs when they pivot their feet while wearing shoes that hold fast to the average firm walking surface, and when weakness in the posterior lower extremity impedes lifting their heels while pivoting. Repeated episodes of pivoting torsion stress coupled with the heavy weight injuries supportive ligaments. Previous treatment methods for these injuries utilized elastic devices that wrapped around the involved joint. Such devices splinted the injured joint but did not reduce the offending torsion inside the joint.

A review of prior art discloses a history of interest in various roller devices to assist in propulsion, not for therapeutic goals, but for recreational purposes, including two wheeled U.S. Pat. No. 4,844,492; three wheeled U.S. Pat. No. 4,523,767; and four wheeled U.S. Pat. No. 3,900,203. These known devices cannot be used to reduce torsion strain of the knee and ankle. Another recreational roller skate U.S. Pat. No. 4,303,253 allowed a person to pivot on the ball of the foot, but it could not be used for walking.

Other prior art devices dealt with shoe heel function. These devices such as the cushioning springs of U.S. Pat. No. 4,296,557; conical springs in U.S. Pat. No. 4,342,158; and leaf spring in U.S. Pat. No. 4,566,206 attempted to reduce the vertical compression strain of running, but did little to reduce torsion strain in the ankle or knee for overweight people in normal walking situations. Prior art also discloses shoe heel devices to alter heel wear, such as U.S. Pat. No. 3,478,447 but did not reduce lower extremity torsion.

SUMMARY OF THE INVENTION

The object of this invention addresses the problem of repeated torsion stress injury of the ankle and knee in the course of walking on a flat firm surface. A roller device facilities bringing the heel around the ball of the foot pivot point with minimum torsion resistance inside the joint of the lower extremity. This shoe heel invention improves pivoting motion when changing directions in the course of normal walking. Contained in a durable housing to form the heel of a shoe are rollers on multiple axles aligned toward the center of the shoe sole near the ball of the foot. The rollers are held inside the housing in a way to maintain even contact with the floor surface when the shoe sole contacts the same surface. On a smooth flat walking surface any twisting motion imparted to the leg will result in lateral displacement of the heel device circumscribing a short arc about the ball of the foot. This pivoting motion prevents the build-up of torsion strain inside the knee and ankle joints.

BRIEF DESCRIPTION OF THE DRAWINGS

A preferred embodiment of the present invention is illustrated in the accompanying drawings in which:

FIG. 1 is a bottom perspective view of the present shoe heel for the left foot attached to a shoe.

FIG. 2 is a cross-section side elevation view on the line 2--2 of FIG. 2 with part of an attached shoe.

FIG. 3 is a bottom elevation view without an attached shoe.

DESCRIPTION OF THE PREFERRED EMBODIMENT

The drawing FIG. 1 shows an otherwise conventional shoe 16 attached to a heel device housing 14 made of durable metal material. The housing 14 has a rear plate 10 and a front plate 12 with metal axles 18 secured to the rear plate 10 and the front plate 12. Along the length of the axles are rollers 20 placed contiguous to each other.

With reference to FIG. 2 the rear plate 10 is taller than the front plate 12 to allow the axles 18 and the rollers 20 to rest on a plane even with a floor surface when the shoe 16 sole contacts the floor surface.

In FIG. 3 the axles 18 are secured in positions further apart from each other on the rear plate 10 compared to closer spacing of the axles 18 on the front plate 12. The alignment of the axles 18 is determined by aligning the longitudinal axis of each axle 18 to a reference point on the middle of the sole located under the distal aspect of where the second metatarsal bone would lie. The acute forward angle formed by the relationship of the axles 18 will vary according to the shoe size.

Ramifications of the above described device are many. Lightweight durable elements will result in a lighter device for easier walking. Removable axles will allow worn out rollers to be replaced. Synthetic rollers with a hard inner core and a softer rubberized outer surface will improve traction during the heel strike of forward walking. Obvious modifications will occur to those skilled in the art to which my device pertains.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US180646 *Jun 14, 1876Aug 1, 1876 Improvement in parlor-skates
US243323 *May 6, 1881Jun 21, 1881 William a
US863675 *May 31, 1907Aug 20, 1907Albert E TorelleSafety-wheel for roller-skates.
US1068575 *Sep 17, 1912Jul 29, 1913 Cushioned boot-heel.
US2165581 *Oct 22, 1938Jul 11, 1939Carl SchroederToecap for toe dancing shoes
US2719724 *Aug 11, 1953Oct 4, 1955Lundgren RobertRoller skate with spring biased steerably interconnected tandem wheels
US3478447 *May 27, 1968Nov 18, 1969Gillead J FosterShoe heel with rotatable lift
US3900203 *Jul 8, 1974Aug 19, 1975Adolph F KukulowiczTandem wheeled roller skate
US3983643 *May 23, 1975Oct 5, 1976Walter SchreyerShoe usable for walking and roller-skating
US4217907 *Aug 14, 1978Aug 19, 1980Meiller Theodore JOrthopedic shoe construction
US4296557 *Jan 31, 1980Oct 27, 1981Pajevic Paul DShoe with sole cushioning assembly
US4303253 *Sep 26, 1980Dec 1, 1981Ronald KestenbaumRoller skate construction having pivotal heel
US4342158 *Jun 19, 1980Aug 3, 1982Mcmahon Thomas ABiomechanically tuned shoe construction
US4382605 *Aug 28, 1980May 10, 1983Hegna Hans OTilt steering of tandem wheeled or runner equipped vehicle
US4523767 *Nov 12, 1982Jun 18, 1985Le Page Steven WThree wheeled roller skate
US4566206 *Apr 16, 1984Jan 28, 1986Weber Milton NShoe heel spring support
US4691453 *Sep 8, 1986Sep 8, 1987Salustiano TifreFor recreation activities
US4844492 *Mar 28, 1988Jul 4, 1989Ludwig Edward ETwo wheeled roller skate
US4928982 *Mar 18, 1988May 29, 1990Logan Kenneth CConvertible running shoes/roller skates
DE723266C *May 25, 1939Aug 1, 1942Dr Walther FrischFussbekleidung mit zur rollenden Fortbewegung des Traegers dienender Rolle
FR330508A * Title not available
GB187603558A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5970631 *Feb 10, 1997Oct 26, 1999Artemis Innovations Inc.Footwear for grinding
US6006450 *Aug 12, 1998Dec 28, 1999Artemis Innovations Inc.Wear resistant grind shoe apparatus
US6041525 *Aug 12, 1998Mar 28, 2000Artemis Innovations Inc.Footwear grinding apparatus with flanking bearing surfaces
US6061930 *Nov 25, 1998May 16, 2000Salomon S.A.Gliding shoe
US6213480 *Jun 30, 1999Apr 10, 2001Juan Carlos RodriguezRoller wheel slider
US6247251Jan 28, 2000Jun 19, 2001Artemis Innovations Inc.Grind plate with removable inserts
US6406038Aug 14, 2001Jun 18, 2002Heeling Sports LimitedHeeling apparatus and method
US6450509Mar 31, 2000Sep 17, 2002Heeling Sports LimitedHeeling apparatus and method
US6698769Feb 3, 2003Mar 2, 2004Heeling Sports LimitedMulti-wheel heeling apparatus
US6739602Feb 7, 2002May 25, 2004Heeling Sports LimitedHeeling apparatus and method
US6746026Feb 15, 2002Jun 8, 2004Heeling Sports LimitedHeeling apparatus and method
US6764082 *Feb 20, 2002Jul 20, 2004Mearthane Products CorporationShoes for walking and rolling
US6926289Apr 5, 2002Aug 9, 2005Guohua WangMultifunctional shoes for walking and skating with single roller
US7032330Feb 3, 2003Apr 25, 2006Heeling Sports LimitedGrind rail apparatus
US7901326 *Apr 20, 2007Mar 8, 2011Polar Electro OyUser-specific performance monitor, method, and computer software product
US8006795 *May 3, 2005Aug 30, 2011Yonatan ManorDevice and method for regaining balance
US8308171Aug 5, 2009Nov 13, 2012Ryan FarrellyPersonal transportation device for supporting a user's foot having multiple transportation attachments
EP1485174A1 *Feb 20, 2003Dec 15, 2004Mearthane Products Corp.Shoes for walking and rolling
WO2000059323A1 *Mar 31, 2000Oct 12, 2000Heeling LtdHeeling apparatus and method
WO2003070337A1 *Feb 20, 2003Aug 28, 2003Mearthane Prod CorpShoes for walking and rolling
Classifications
U.S. Classification36/115, 36/136, 280/11.19
International ClassificationA43B23/00, A43B5/16
Cooperative ClassificationA63C17/24, A43B5/1641, A63C17/04
European ClassificationA43B5/16S, A43B23/00, A63C17/04, A63C17/24
Legal Events
DateCodeEventDescription
Dec 16, 1997FPExpired due to failure to pay maintenance fee
Effective date: 19971008
Oct 5, 1997LAPSLapse for failure to pay maintenance fees
May 13, 1997REMIMaintenance fee reminder mailed